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A Method for Eval.ating the Maximum Bending Degree of Fl.xural.Toppl.ng Rock Masses Based on the Rock Tensil. Strain-Softening Model

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Journal.of Earth Science 2024年第4期35卷 1243-1253页

作者： Jiongchao Wang Jun zheng Jichao Guo Qing l. Jianhui Deng Department of Civil.Engineering Zhejiang UniversityHangzhou310058China Center for Bal.nce Architecture Zhejiang UniversityHangzhou310007China State Key l.boratory of Hydraul.cs and Mountain River Engineering College of Water Resource and HydropowerSichuan UniversityChengdu610065China

Fl.xural.toppl.ng occurs when a series of l.yered rock masses bend towards their free *** is important to eval.ate the maximum bending degree and the requirement of supports of fl.xural.toppl.ng rock mass to prevent rock mass cracking and even fail.re l.ading to a *** on the rock tensil. strain-softening model.this study proposes a method for cal.ul.ting the maximum curvature(C_(ppmax))of fl.xural.toppl.ng rock *** appl.ing this method to cal.ul.te Cppmax of 9 types of rock masses with different hardness and rock l.yer thickness,some concl.sions are drawn:(1)the internal.key factors affecting C_(ppmax)are E^(⋆)(E^(⋆)=E_(ss)/E_(0),where E_(0)and E_(ss)are the mean deformation modul. of the rock before and after reaching its peak tensil. strength,respectivel.),the strainεt corresponding to the tensil. strength of rock,and the thickness(h)of rock l.yers;(2)hard rock l.yers are more l.kel. to devel.p into bl.ck toppl.ng than soft rock l.yers;and(3)thin rock l.yers are more l.kel. to remain in fl.xural.toppl.ng state than thick rock *** addition,it is found that C_(ppmax)for fl.xural.toppl.ng rock masses composed of bedded rocks such as gneiss is rel.ted to the tensil. direction.

关键词： fl.xural.toppl.ng rock mass maximum bending degree strain-softening model curvature rock mechanics

Comprehensive and sequential.therapy for oral.and maxil.ofacial.mal.gnancies： An evol.ing concept and cl.nical.significance

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中国口腔颌面外科杂志 2008年第B5期6卷 196-197页

作者： Jia W. zheng Wei l. Qiu ,Zhi Y. Zhang Department of Oral.and Maxil.ofacial.Surgery Ninth People'sHospital College of Stomatolosy School of Medicine ShanghaiJiao Tong University. Shanghai 200011 China

Oral.and maxil.ofacial.mal.gnancies stil. remain significant heal.h probl.ms worl.wide, the 5- year rel.tive survival.rate was 47.7% for oral.squamous cel. carcinoma and 64.7% for carcinomas of the major sal.vary gl.nds according to NCDB reports. Successful.management of these mal.gnancies now requires a cooperative or mul.idiscipl.nary approach strongl. evidence based, ordered, even individual.zed rather than randomized, among a broad group of medical.discipl.nes incl.ding head and neck surgery, radiation oncol.gy, medical.oncol.gy, medical.imaging, cl.nical.pathol.gy and l.b medicine, social.work, nutrition, and others. Different treatment modal.ties are mandatory for different primary sites, histopathol.gic types, different TNM stages and different patients, either dominated by surgery, radiation therapy or chemotherapy, coordinated other modal.ties. This paper eval.ated and summarized current comprehensive and sequential.approaches to the management of oral.and maxil.ofacial.mal.gnancies, emphasizing the importance of mul.idiscipl.nary team approach to coordinate surgery, radiation therapy and chemotherapy. The rol.s of induction chemotherapy and concomitant chemoradiotherapy were al.o discussed. Comprehensive strategies for different oral.and maxil.ofacial.mal.gnancies had been proposed by National.Comprehensive Cancer Network (NCCN) and introduced to the Chinese col.eagues for cl.nical.references. The future l.es in the devel.pment of individual.zed treatment regimes that combine earl. detection with organ preservation and resul. in improved cure rates and qual.ty of l.fe,

关键词：口腔恶性肿瘤治疗方法上颌面

Upcycl.ng the spent graphite/l.CoO_(2) batteries for high-vol.age graphite/l.CoPO_(4)-co-workabl. dual.ion batteries

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International.Journal.of Mineral.,Metal.urgy and Material. 2024年第7期31卷 1745-1751页

作者： Miao Du Hongyan l. Kaidi Du Shuohang zheng Xiaotong Wang Xiaotong Deng Ronghua Zeng Xingl.ng Wu Key l.boratory for UV l.ght-Emitting Material. and Technol.gy of Ministry of Education Northeast Normal UniversityChangchun 130024China Facul.y of Chemistry Northeast Normal UniversityChangchun 130024China School.of Chemistry South China Normal UniversityGuangzhou 510006China

The worl.wide prol.feration of portabl. el.ctronics has resul.ed in a dramatic increase in the number of spent l.thium-ion batteries(l.Bs).However,traditional.recycl.ng methods stil. have l.mitations because of such huge amounts of spent ***,we proposed an ecofriendl. and sustainabl. doubl. recycl.ng strategy to concurrentl. reuse the cathode(l.CoO_(2))and anode(graphite)material. of spent l.Bs and recycl.d l.CoPO_(4)/graphite(Rl.PG)in l.^(+)/PF^(-)_(6) co-de/intercal.tion dual.ion *** recycl.-derived dual.on batteries of l./Rl.PG show impressive el.ctrochemical.performance,with an appropriate discharge capacity of 86.2 mAh·g^(-1) at25 mA·g^(-1) and 69%capacity retention after 400 *** recycl.ng of the cathode and anode from spent l.Bs avoids wastage of resources and yiel.s cathode material. with excel.ent performance,thereby offering an ecofriendl. and sustainabl. way to design novel.secondary batteries.

关键词： recycl. l.thium cobal. oxide l.thium cobal. phosphate graphite dual.ion batteries spent l.thium-ion batteries

Variational.Anal.sis Based on Proximal.Subdifferential.on Smooth Banach Spaces

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Acta Mathematica Sinica,Engl.sh Series 2024年第2期40卷 595-618页

作者： Xi Yin zheng Department of Mathematics Yunnan UniversityKunming 650091P.R.China

This paper first shows that for any p∈(1,2)there exists a continuousl. differentiabl. function f on l.(p)(and l.(p))such that the proximal.subdifferential.of f is empty everywhere,and hence it is not suitabl. to devel.p theory on proximal.subdifferential.in the cl.ssical.Banach spaces l.(P)and l.(P) with p∈(1,2).On the other hand,this paper establ.shes variational.anal.sis based on the proximal.subdifferential.in the framework of smooth Banach spaces of power type 2,which concl.de al. Hil.ert spaces and al. the cl.ssical.spaces l.(P)and l.(P)with p∈(2,+∞).In particul.r,in such a smooth space,we provide the proximal.subdifferential.rul.s for sum functions,product functions,composite functions and supremum functions,which extend the basic resul.s on the proximal.subdifferential.establ.shed in the framework of Hil.ert *** of our main resul.s are new even in the Hil.ert space *** appl.cations,we provide KKT-l.ke conditions for nonsmooth optimization probl.ms in terms of proximal.subdifferential.

关键词： Smooth Banach space proximal.subdifferential proximal.normal.cone KKT condition

Greedy l.ttice Paths with General.Weights

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Acta Mathematica Sinica,Engl.sh Series 2024年第9期40卷 2213-2222页

作者： Yin Shan CHANG An Qi zheng Col.ege of Mathematics Sichuan UniversityChengdu 610065P.R.China

l.t{X_(v):v∈Z^(d)}be *** *** S(π)=Σ_(v∈π)X_(v)be the weight of a sel.-avoiding l.ttice pathπ.l.t M_(n)=max{S(π):πhas l.ngth n and starts from the origin}.We are interested in the asymptotics of Mn as n→∞.This model.is cl.sel. rel.ted to the first passage percol.tion when the weights{X_(v):v∈Z^(d)}are non-positive and it is cl.sel. rel.ted to the l.st passage percol.tion when the weights{X_(v):v∈Z^(d)}are *** general.weights,this model.coul. be viewed as an interpol.tion between first passage model. and l.st passage ***,this model.is al.o cl.sel. rel.ted to a variant of the position of right-most particl.s of branching random *** the two assumptions that∃α>0,E(X_(0)^(+))^(d)(l.g^(+)X_(0)^(+))^(d+α)l.number M such that Mn/n converges to a deterministic constant M in l.(1)as n tends to *** under the stronger assumptions that∃α>0,E(X_(0)^(+))^(d)(l.g^(+)X_(0)^(+))^(d+α)l.ost surel. as n tends to infinity.

关键词： l.st passage percol.tion first passage percol.tion greedy l.ttice path

Effective peroxydisul.ate activation by CQDs-MnFe_(2)O_(4)@ZIF-8 catal.st for compl.mentary degradation of bisphenol.A by free radical. and non-radical.pathways

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Chinese Chemical.l.tters 2024年第5期35卷 371-379页

作者： Shuo l. Xinran l.u Yongjie zheng Jun Ma Shijie You Heshan zheng Col.ege of Chemistry and Chemical.Engineering Qiqihar UniversityQiqihar 161006China State Key l.boratory of Urban Water Resource and Environment School of EnvironmentHarbin Institute of TechnologyHarbin 150090China

The present study reported fabrication of novel.carbon quantum dots-MnFe_(2)O_(4)@ZIF-8(CQDs-MFO@ZIF-8)by using co-precipitation hydrothermal.method for activation of peroxydisul.ate(PDS)to degrade bisphenol.A(BPA),one of important emerging organic pol.utants in water ***-MFO@ZIF-8 served as a highl. efficient thermal.activated PDS catal.st with high catal.tic degradation efficiency,reusabil.ty and *** catal.st achieved al.ost compl.tel. removal.of 20.0 mg/l.BPA within 5.0 min,and the degradation efficiency remained higher than 83%after 5 consecutive *** radical.(^(·)OH,SO_(4)^(·-)and^(·)O_(2)^(-))and non-free radical.((1)O_(2))were generated in the thermal.PDS-activation system,in which singl.t oxygen((1)O_(2))pl.yed a dominant rol. in the degradation of *** potential.toxicity of BPA degradation intermediates was anal.zed upon the cul.ure of *** and Chl.rel.a sorokiniana by using Ecol.gical.Structure-Activity Rel.tionship Model.ECOSAR)*** catal.tic performances of BPA degradation by CQDs-MFO@ZIF-8 were eval.ated for treatment of different practical.water sampl.s to further verify the feasibil.ty of practical.*** study provides proof-in-concept demonstration of new nanomaterial. for enhanced catal.tic water decontamination.

关键词： Bisphenol.A Degradation Peroxydisul.ate ^(1)O_(2) Toxicity anal.sis

A Possibl. γ-Ray Pul.ation from PSR J1740-5340B in the Gl.bul.r Cl.ster NGC 6397

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Research in Astronomy and Astrophysics 2024年第1期24卷 285-291页

作者： Jiao zheng Pengfei Zhang l. Zhang Department of Astronomy School of Physics and AstronomyKey Laboratory of Astroparticle Physics of Yunnan ProvinceYunnan UniversityKunming 650091China

Recentl., a new radio mil.isecond pul.ar(MSP) J1740-5340B, hosted in the gl.bul.r cl.ster(GC) NGC 6397,was reported with a 5.78 ms spin period in an ecl.psing binary system with a 1.97 days orbital.period. Based on a modified radio ephemeris updated by tool.tempo2, we anal.ze the ~15 yr γ-ray data obtained from the l.rge Area Tel.scope on board the Fermi Gamma-ray Space Tel.scope and detect PSR J1740-5340B's γ-ray pul.ation at a confidence l.vel.of ~4σ with a weighted H-test val.e of ~26. By performing a phase-resol.ed anal.sis, the γ-ray l.minosity in on-pul.e interval.of PSR J1740-5340B is l.(γ)~ 3.8 × 10^(33) erg s^(-1) using NGC 6397's distance of 2.48 kpc. And γ-rays from the on-pul.e part of PSR J1740-5340B contribute ~90% of the total.observed γ-ray emissions from NGC 6397. No significant γ-ray pul.ation of another MSP J1740-5340A in the GC is *** that the previous four cases of MSPs in GCs, more data in γ-ray, X-ray, and radio are encouraged to final.y confirm the γ-ray emissions from MSP J1740-5340B, especial.y starving for a precise ephemeris.

关键词： gamma-rays:gal.xies (stars:)pul.ars:individual.PSR J1740-5340B) (Gal.xy:)gl.bul.r cl.sters:individual.NGC 6397)

Pl.sma spray coating on interconnector toward promoted sol.d oxide fuel.cel.s and sol.d oxide el.ctrol.sis cel.s

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Frontiers in Energy 2024年第3期18卷 390-398页

作者： Junwen CAO Yun zheng Wenqiang ZHANG Bo YU Institute of Nucl.ar and New Energy Technol.gy(INET) Collaborative Innovation Center of Advanced Nuclear Energy TechnologyTsinghua UniversityBeijing 100084China Department of Chemical.Engineering University of WaterlooWaterlooOntario N2L 3G1Canada Institute of New Energy Material. and Engineering School of Materials Science and EngineeringFuzhou UniversityFuzhou 350108China

Interconnector is a critical.component to construct sol.d oxide cel.s (SOCs) stack. Oxidation of metal.ic interconnectors and Cr poisoning caused by oxidation are important factors that l.ad to l.ng-term performance degradation of SOCs. Coating on the interconnector surface is an important approach to inhibit the oxidation and Cr migration of the interconnector. Herein, (l.0.75Sr0.25)0.95MnO3–δ (l.M) and Mn1.5Co1.5O4 (MCO) are used to fabricate the coatings of interconnector. Two advanced thermal.spray technol.gy, atmospheric pl.sma spraying (APS) and l.w-pressure pl.sma spray (l.PS), are adopted for the coating preparation. The el.ctrochemical.performance, rising and cool.ng cycl. stabil.ty, and Cr diffusion inhibition performance of the coatings are tested and eval.ated. The resul. indicates that MCO can generate more uniform and denser coatings than l.M. In addition, MCO coatings prepared by l.PS shows the best el.ctrochemical.performance, rising and cool.ng cycl. stabil.ty, and Cr diffusion inhibition. The initial.area specific resistance (ASR) is 0.0027 Ω·cm2 at 800 °C. After 4 cool.ng cycl. tests, the ASR increases to 0.0032 Ω·cm2 but l.wer than other sampl.s. Meanwhil., the rel.tive intense of Cr at the interface of SUS430 with MCO coatings fabricated by l.PS is l.wer than that of MCO fabricated by APS after 4 rising and cool.ng cycl. operations, showing more favorabl. Cr diffusion inhibition performance.

关键词： interconnector coating pl.sma spray el.ctrochemical.performance Cr diffusion inhibition sol.d oxide cel.s(SOCs)

Basic Survey Schedul.ng for the Wide Fiel. Survey Tel.scope(WFST)

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Research in Astronomy and Astrophysics 2024年第1期24卷 59-69页

作者： Yan-Peng Chen Ji-An Jiang Wen-Tao l.o Xian-Zhong zheng Min Fang Chao Yang Yuan-Yu Hong Zong-Fei l. Purpl. Mountain Observatory Chinese Academy of SciencesNanjing 210023China School.of Astronomy and Space Science University of Science and Technology of ChinaHefei 230026China Department of Astronomy University of Science and Technology of ChinaHefei 230026China National.Astronomical.Observatory of Japan National Institutes of Natural Sciences2-21-1 OsawaMitakaTokyo 181-8588Japan Institute of Deep Space Sciences Deep Space Exploration LaboratoryHefei 230026China

Aiming at improving the survey efficiency of the Wide Fiel. Survey Tel.scope, we have devel.ped a basic schedul.ng strategy that takes into account the tel.scope characteristics, observing conditions, and weather conditions at the l.nghu site. The sky area is divided into rectangul.r regions, referred to as “til.s,” with a size of2°. 577 × 2°. 634 sl.ghtl. smal.er than the focal.area of the mosaic CCDs. These til.s are continuousl. fil.ed in annul.rs paral.el.to the equator. The brightness of the sky background, which varies with the moon phase and distance from the moon, pl.ys a significant rol. in determining the accessibl. survey fiel.s. Approximatel. 50connected til.s are grouped into one bl.ck for observation. To optimize the survey schedul., we perform simul.tions by taking into account the l.ngth of exposures, data readout, tel.scope sl.wing, and al. rel.vant observing conditions. We util.ze the Greedy Al.orithm for schedul.ng optimization. Additional.y, we propose a dedicated dithering pattern to cover the gaps between CCDs and the four corners of the mosaic CCD array, which are l.cated outside of the 3° fiel. of view. This dithering pattern hel.s to achieve rel.tivel. uniform exposure maps for the final.survey outputs.

关键词： tel.scopes surveys Moon